Static Bypass Switch Integrating Transfer Switch for Dual Mains UPS
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Solution Overview
Problem
Existing uninterruptible power systems (UPS) often require expensive and complex external transfer switches and best source selectors to utilize multiple power sources, making them large, difficult to install, and costly for dual mains input configurations.
Innovation Solution
A dual mains UPS system incorporating a static bypass switch module with a backfeed protection circuit, switch circuits, and a power module, allowing for conditioning power from multiple sources within a compact and cost-effective design, with a controller managing operation across different modes based on input power quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external transfer switches and best source selectors are used to utilize multiple power sources, then power source availability and reliability are improved, but device complexity, size, and installation difficulty increase
Solution Approach 1:
The patent combines the transfer switch functionality and best source selector into a single integrated static bypass switch module. The controller within this module manages multiple power sources (mains input and bypass input) and automatically selects the best source, eliminating the need for separate external transfer switches and best source selectors. This merging reduces device complexity while maintaining reliability.
Solution Approach 2:
The static bypass switch module performs multiple functions: it acts as a transfer switch to connect between mains and bypass inputs, serves as a best source selector to choose the optimal power source, and provides backfeed protection. This multi-functionality consolidates what would traditionally require multiple separate devices into one unit, reducing overall system complexity.
2Adaptability or versatility
If external transfer switches are used for dual mains input configuration, then power source flexibility is improved, but device size and installation difficulty increase
Solution Approach 1:
The patent integrates the transfer switch functionality directly into the UPS system's static bypass switch module, eliminating the need for separate external transfer switches. The controller manages dual mains inputs through this integrated module, providing power source flexibility while significantly reducing the device footprint and simplifying installation.
3Adaptability or versatility
If external transfer switches and best source selectors are used, then power source selection capability is improved, but manufacturing cost and installation cost increase
Solution Approach 1:
The patent consolidates the transfer switch and best source selector into a single static bypass switch module with an integrated controller. This reduces the total component count, simplifies assembly, and lowers manufacturing costs compared to using separate external devices. The power source selection capability is maintained through the controller's ability to manage multiple inputs.
Solution Approach 2:
The static bypass switch module serves multiple purposes: transfer switching, best source selection, and backfeed protection. This multi-functionality eliminates the need to manufacture and install multiple separate devices, reducing both manufacturing complexity and associated costs while maintaining full power source selection capability.
Data Source
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AI summary
According to one aspect, embodiments of the invention provide a UPS system (100) comprising a first input (102), a second input (104), an output (108), a power module (112) coupled to the first input, wherein the power module is configured to condition power provided to the input of the power module and provide conditioned power to an output of the power module, and a static bypass switch module (110) selectively coupled to the first input and the second input, wherein, in a first mode of operation, the static bypass switch module is configured to couple the second input to the input of the power module, and provide a second input power to the input of the power module, and wherein, in a second mode of operation, the static bypass switch module is configured to provide a first input power to the output of the UPS system, through the bypass switch module, bypassing the power module.